The study is aimed at investigating the antimicrobial and coagulation performance of Chrysophyllumalbidum (Udara) seed in water purification and its optimality using Game theory. The study concluded that Game theory approach is a better cost minimization model than the Simplex method for obtaining the optimal cost of water treatment in Anambra State. Despite this progress, isolation and purification of coagulant proteins from Chrysophyllum albidum (udara) seed, determination of the best solvent for the extraction of active compounds are recommended for Water and Wastewater Treatments. In contribution to knowledge, the study indicates that at optimum conditions ethanol extracts of Udara (Chrysophyllum albidum) seeds would improve surface water quality for domestic uses, thereby making it a suitable natural sciences applications coagulant for household water purification.